Novel Reaction Media of Na2CO3-CaO for Silicon Extraction and Aluminum Removal from Diamond Wire Saw Silicon Powder by Roasting-Smelting Process

doi:10.1021/acssuschemeng.9b06884

	Novel Reaction Media of Na2CO3-CaO for Silicon Extraction and Aluminum Removal from Diamond Wire Saw Silicon Powder by Roasting-Smelting Process
	Yang, Shicong 2; Wan, Xiaohan 2; Wei, Kuixian 2,3; Ma, Wenhui 2,3,4; Wang, Zhi 1
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2020-03-16
卷号	8 期号:10 页码:4146-4157
关键词	Diamond wire saw silicon powder Silicon extraction Aluminum removal Na2CO3-CaO reaction media hicluction furnace roasting-smelting
ISSN号	2168-0485
DOI	10.1021/acssuschemeng.9b06884
英文摘要	Exploring a sustainable process to dispose diamond wire saw silicon powder (DWSSP) waste produced in the solar crystal silicon wafering process is a research field with significant theoretical research value and industrial engineering application. The current consensus on silicon extraction from DWSSP is that SiO2 oxide layer digestion and high-content Al removal are two main factors governing the yield and purity of silicon. To solve these problems, a novelty reaction media of Na2CO3-CaO in the induction furnace roasting-smelting process for silicon extraction and aluminum removal from DWSSP was proposed. The mechanisms of SiO2 digestion and Al removal during the roasting-smelting process were investigated by thermodynamic analysis, mineral transformation, and roasting-smelting experimental investigation. The obtained silicon with a Al removal efficiency of 48.44% and silicon yield of 55.5% was improved from 89.125% to 99.31% under the furnace feed mass composition of 38.4 g Na2CO3, 5.1 g CaO, and 300 g DWSSP, and holding time for 2 h in 1823 K. The novelty reaction media of Na2CO3-CaO is expected to achieve efficient silicon extraction and aluminum removal from DWSSP. This process provides an alternative choice for the commercial production of silicon alloy, silicone, and high purity silicon preparation with a process that is low in cost, is easy to operate, exhibits short flow, and can be sustainably manufactured.
资助项目	National Key R&D Program of China[2018YFC1901805] ; National Key R&D Program of China[2018YFC1901801] ; Major Science and Technology Projects in Yunnan Province[2019ZE007] ; Reserve Talents of Young and Middle-aged Academic and Technical Leaders in Yunnan Province[2018HB009] ; National Natural Science Foundation of China[51904134] ; Program for Innovative Research Team in University of Ministry Education of China[IRT-17R48]
WOS关键词	COAL FLY-ASH ; THERMAL-EXPANSION COEFFICIENT ; HIGH-PURITY SILICON ; KERF-LOSS ; HYDROGEN DESORPTION ; SLURRY WASTE ; ACTIVATION ; ELIMINATION ; REDUCTION ; BORON
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000526352300015
资助机构	National Key R&D Program of China ; Major Science and Technology Projects in Yunnan Province ; Reserve Talents of Young and Middle-aged Academic and Technical Leaders in Yunnan Province ; National Natural Science Foundation of China ; Program for Innovative Research Team in University of Ministry Education of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/40323]
专题	中国科学院过程工程研究所
通讯作者	Wei, Kuixian; Ma, Wenhui
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Kunming Univ Sci & Technol, Fac Met & Energy Engn, Natl Engn Lab Vacuum Met, Xuefu Rd, Kunming 650093, Yunnan, Peoples R China 3.Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Xuefu Rd, Kunming 650093, Yunnan, Peoples R China 4.Silicon Mat Ind Res Inst Innovat Ctr Yunnan Prov, Kunming 650093, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Yang, Shicong,Wan, Xiaohan,Wei, Kuixian,et al. Novel Reaction Media of Na2CO3-CaO for Silicon Extraction and Aluminum Removal from Diamond Wire Saw Silicon Powder by Roasting-Smelting Process[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2020,8(10):4146-4157.
APA	Yang, Shicong,Wan, Xiaohan,Wei, Kuixian,Ma, Wenhui,&Wang, Zhi.(2020).Novel Reaction Media of Na2CO3-CaO for Silicon Extraction and Aluminum Removal from Diamond Wire Saw Silicon Powder by Roasting-Smelting Process.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,8(10),4146-4157.
MLA	Yang, Shicong,et al."Novel Reaction Media of Na2CO3-CaO for Silicon Extraction and Aluminum Removal from Diamond Wire Saw Silicon Powder by Roasting-Smelting Process".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 8.10(2020):4146-4157.